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// +build darwin
package machineid
import (
"bytes"
"fmt"
"os"
"strings"
)
// machineID returns the uuid returned by `ioreg -rd1 -c IOPlatformExpertDevice`.
// If there is an error running the commad an empty string is returned.
func machineID() (string, error) {
buf := &bytes.Buffer{}
err := run(buf, os.Stderr, "ioreg", "-rd1", "-c", "IOPlatformExpertDevice")
if err != nil {
return "", err
}
id, err := extractID(buf.String())
if err != nil {
return "", err
}
return trim(id), nil
}
func extractID(lines string) (string, error) {
for _, line := range strings.Split(lines, "\n") {
if strings.Contains(line, "IOPlatformUUID") {
parts := strings.SplitAfter(line, `" = "`)
if len(parts) == 2 {
return strings.TrimRight(parts[1], `"`), nil
}
}
}
return "", fmt.Errorf("Failed to extract 'IOPlatformUUID' value from `ioreg` output.\n%s", lines)
}
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